Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education);
Department of Physics;
Jilin University;
Changchun 130012;
China;
Department of Chemical Physics;
University of Science and Technology of China;
Hefei 230026;
China;
State Key Laboratory of Structural Chemistry;
Fujian Institute of Research on the Structure of Matter;
Chinese Academy of Sciences;
Fuzhou 350002;
China;
polypeptides; amide vibration; nonlinear response; MSMs; T-jump; implicit solvent model; ITS; 2DIR; folding landscape;